(4.5-4.5*0.8)*(7.4-6.4) 简算
(4.5-4.5*0.8)*(7.4-6.4) 简算
其他人气:558 ℃时间:2020-04-10 12:01:12
优质解答
4.5*(1-0.2)*1=4.5*0.8=3.6
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